I love it when randomly unconnected people line up and perform for my camera. How else would 2 independent people be biting their finger at the same time? It is also an excellent example for the reason why you should shoot with narrow apertures on the street. You never know what might be happening in the background! That’s also why MFT is a good format for street photography. It gives deep depth of field even at wider apertures. This might not be great for portraits because it’s harder to isolate the subject, but for street photography this is exactly what is needed.